Abstract:
The main purpose of the study is to evaluate hydrocarbon potential of the well named Tolanj 01,
Kohat Sub-Basin, KPK, Pakistan. This has been achieved by using complete suite of wire line
logs and available well data. This complete set of data is issued by Land Mark Resources,
Pakistan with the prior permission of Directorate General of Petroleum Concessions, Pakistan.
To complete the above mentioned task, all logs were correlated to mark the horizon of interest.
In our case, the zone of interest was from Lockhart (Paleocene age) to Samanasuk Limestone
(Late Jurrasic age). After the demarcation of interested zone, each zone (i.e Lockhart Limestone,
Darsamand/Kawagarh Formation, Lumshiwal Formation and Samanasuk Limestone ) were
evaluated in detail for the hydrocarbon potential using different sets of equations.
The methodology adopted to accomplish this task include; the measurements for the Shale
volume by using Gamma Ray Log, Porosities of the Reservoir zone by Density, Neutron and
Sonic Logs, Resistivity of water by using Spontaneous potential log , Saturation of water and
Hydrocarbon saturation in the zones. Then mechanical properties of rocks were analyzed to
understand the trends of elastic parameters in the zones, as well as to establish the relationships
of elastic parameters and velocities. The relationships between the Vp, Vs, Porosity, Density,
Vp/Vs and elastic parameters of interested zones helped to understand the changes in trends and
reasons for these changes.
The results for the dissertation were then displayed in the form of graphs and excel sheets for the
better approach towards the task.
